Raising and lowering device



1. GASSER AND A. H..BARBER. RAISING AND LOWERING DEVICE. APPLICATION man` mi. 21. 1920.

Patentedsept. 21, 1920.

2 SHEETS-SHEET I.

Vara a? i016 fwnarran eterea.

JOSEPH, GASSEB, AND ALFRED BARBER, OF TRENTON, NEW JERSEY. i

RAISING AN D LOWERING DEVICE.

Specieaton of Letters Patent. Pwntd Sept. r2j, 1920.

Application Ied February 21, 1920. Serial No. 360,530.

To all whom t may concern:

Be it known that we, Josnrn Gassen and ALFRED H. BARBER, citizens of the United States, residing at rlrenton, in the county of Mercer and Stateof New Jersey, have invented new and useful improvements in Raising and Lowering Devices, of which the following is a specification.

The invention relates to devices for raismg and lowering objects or bodies and has Y for an object to provide a device for readily raising or lowering heavy bodies and the like to or from a horizontal position to an inclined position, the device being particularly adapted for use in connection with dump wagons for the raising or lowering of the dump boxes.

The invention is further particularly adapted for use in connection with the usual automobile trucks so that the raisingand lowering mechanism can be operated by the motor of the truck to raise therdump box from its normal position on the lbodysof the vehicle to an inclined or tilting position so that the contents of the dump box can gravitate therefrom or be readily removed from the dump car, the mechanism of course also providing for the return of the dump boX to its normal position on the vehicle body.

t will of course be apparent that any form of motive power, manual or `otherwise"` wagon, the dump boX being shown in tilting-- position with portions of the side of the frame broken away. n

Fig. 2- is a front elevation of the operating and clutch mechanism. e Y

Fig. 3- is a vertical longitudinal sectional view taken through the structure, the dump body being shown in `its normal position. j f

Fig. L1- is a horizontal sectional view taken substantially on the linee-.11 in Fig. 1, showing the tripping mechanism for the clutch, the superposed parts being dotted,

. and

Fig. 5- is a vertical sectional view taken through the frame and blocks. I

Referring more particularly to the views, the numeral 10 indicates a vehicle Vchassis on which is mounted a frame 11, the latterV if. desirable, forming a complete part of the vehicle body or chassis. The framell is of a substantially rectangular construction and on its inner face is provided withlongitudinal side guides 12 which are formed by upper and lower spaced plates or strips 13, these guides being provided for the guiding of suitable. blocks 14:. Journaled y'in the ends of the frame k11 and extending longitudinally through the side guidesp12, are screw the frame and it will of course be apparent that rotation of the shaft and the gears 17 will actuate the gears 16 to rotate the screw rods so as to move the two sets of blocks toward or away from each other. VA dilierf ential 20 is provided comprehending op posed spur gears 21 and a central gear20 in mesh with the spur' gears 21, a `suitable driven toothed wheel 23 being carried by one of the gears 21 and adapted by suitable chain or other connection to be driven by a V driving wheel or gear 24. Asliding clutch element 25 is arranged upon the cross shaft 18 between' the gears 21, to be engaged with one or the other of the gears to be held in a neutral position, it being clearly apparent l that the ideais to govern the rotation of the toothed wheel 23. A stirrup 26 projects upwardly from the rod 27 to engage loosely with the clutch element 25, the rod being mounted to slide on the frame 11 and con` nected by a link 28 with an operating rod 29 mounted on the frame 11 and having pins 30 projecting therefrom at right angles thereto at certain distances on the rod 29.

These .pins acty as trip pins to be engaged by the blocks on the same side of the Jframe so as to operate the clutch element 25 to automatically throw it into neutral position when the dump box to be hereinafter described, reaches the limit ot its raised position or its normal position on the body of the vehicle.

JFor the purpose ot clearer description l will term the liront blocks i4 `and the rear blocks 14D. The front blocks 14a are connected by a cross shalt 3l and the rear blocks 141 by a cross shaft 3l and mounted on the cross shafts and in 'tact constituting a part of the construction, is a iramewvorlr 32, consisting of a pair ot parallel jiront arms 33 'for the cross shalt 3l and which passes through the lower ends of the front arms and a 1pair et rear arms -34 tor the cross shaft 31h, which latter passes through the lower ends or" the rear ar is. A bearing shaft 35 is carried on the upper enos of the t'ront arms 33 and passes through the liront arms and also through the rear arms at the points at which they meet the front arms, said front and rear arms beinO' relatively inclined toward each other. rlhe arms 34 however extend forwardly and upwardly a considerable distance beyond the front arms in the nature ot extensions 3G and the extremities ot these extensions carry a cross shaft 37 which is in fact a roller to bear against a longitudinal dat plate 33 on the under-side ot a dump box or other body Mounted to swing on the extremities or the bearing shaft 35 are a plurality or rearwardly extending curved arms 30 which at their extremities have the ends of a cross bar or shaft 4l passing therethrough, the latter being mounted on a suitable lhannel mounting 42 secured to the underside olY the dump box at the rear and these arms 4() at their points of curvature are adapted to roll over suitable rollers 43 mounted on bifurcated portions 44 ot horizontally dispos d extension bars 45, rigidly securedto the front arms 33.

New by reference to lthe vie is it will be apparent that when the dump box is resting in a horizontal position upon the frame 1l and it is desired to raise and tilt the dump box to remove the contents thereof, power transmitted'to vlthe driven wheel 23 will sult in rotation oi the shaft i3 and one ot the gears 2l being in mesh with the ditterential gear 2l, rotation ot the shalt in a certain direction will necessarily iollow and thus the screw rods 'l5 will be rotated and the Jfront and rear sets ot blocks l4a, 14 caused to move toward each other. rllhis action brings about a raising ot the arms 33, 34, causing the roller 37 on the end ot the extension 36 to ride upon the underside ot the plate 38, thus raising the forward end ot the dump box so as to bring about the tilting action and as the blocks continue to move toward each other the upward movement ot the front part oi" the dump box so as to bring about 'the desired elevation of the dump box, maintaining the same however in its tilting position so that the dump box can be brought 'to the desired elevation and its contents permitted to gravitate therefrom. T he rear extremity or the floor 46 ot the dump box has a out out portion 47 into which the contents oro the dump box will gravitate and the underside of the loor has a closure 43or the cut out portion or opening provided with a suitable chute 49 provided at the rear beneath the cutout portion or opening 4T and which chute may be arranged in any desired position, the opening of the closure 48, which normally forms the bottom ot the cut out portion, permitting the contents oi"A the dump box to gravitate and pass into and through the chute.

lt will now be seen that: when 'the dump box is raised to its tilting and dumping position, one of the blocks will engage one ot the pins 30 on the operating rod 29, actuating the latter and in turn through the medium o' the link 28, rod 2'? and stirrup 26, actuating the clutch element 25 to move the same into neutral position, thus bringing about a discontinuance 'of the upward movement of the dump box at the moment that the dump box has reached dump-ing position. Simultaneously when the clutch element is later on engaged with the other gear of the differential mechanism, the rotation oi the screw rods will be reversed, causing thev dump box to be lowered and when the dump box reaches its normal horizontal position, one of the blocks will engage the other trip pin 30 and again throw? the clutch element into neutral position.

While we have described our device as applied to a dumpvehicle, it will be understood that the invention is primarily a rai`^` ing and lowering device or mechanism which may be adapted to various other purposes for the raising and lowering ot heavy objects and the inclination or til-ting thereot, although as mentioned heretofore, we particularly aim to adapt the device to vehicles such as one usually inds' devoted to the carrying ot material which is subsequently to be unloaded or dumped, and with this in mind our device taires up very little room on the vehicle, has no cumbersome projections extending beyond the front and rear of the vehicle body and provides tor the ready moving of the dump box into and out of dumping positions. Having described our invention, -we

claim- Y l. In a lowering and raising device the combination with a main frame of blocks mounted to slide in said main frame, screw Nrods longitudinallylmounted in said main frame and having said blocks threaded thereon, a vehicle body, an interposed toggle frame connecting with said blocks and supporting said vehicle body and elevating or lowering the latter when the screw rods are actuated and in turn actuate said blocks, a supplementary frame on the main frame, a power reverse mechanism mounted on said supplementary frame and having connection with said screw rods, an operating rod mounted to slide on the main frame adjacent to one of said screw rods, pins projecting from said operating rod to be engaged by certain of said blocks and means mounted on said supplementary frame and connecting said operating rod with said power reverse mechanism for the operation of the latter when one of said blocks engages with one of the pins on the said operating rod.

2. In a lowering and raising device the combination with a horizontal frame and horizontal guides on the main frame, screw rods extending longitudinally of said guides, blocks threaded on to said screw rods and operating` in said guides, cross shafts connecting said blocks in pairs, a vehicle body, an interposed toggle frame connected to said cross shafts and supporting said vehicle body for the raising or lowering of the latter when the screw rods are actuated to actuate said blocks and in turn operate the toggle frame, an operating rod mounted on said main frame and extending longitudinallyto one of said screw rods, pins projecting from said operating rod to be engaged by certain of said blocks and actuate said operating rod, a supplementary frame on the main frame, a horizontally disposed power reverse mechanism on said supplementary frame, means connecting said power reverse mechanism with said screw rods and a combined lever and clutch member for said power reverse mechanism mounted on said supplementary frame and connecting with said operating rod for the operation of said power reverse mechanism when the operating rod is actuated.

3. In a lowering and raising device, the

combination with a frame, ofguides on theV frame, blocks mounted to slide in the guides, screw rods extending longitudinally in the frame and provided with opposed threads, lsaid blocks having threaded engagement with said screw rods, bearing shafts connecting said blocks in pairs, arms carried by one of saidvbearing shafts to extend upwardly from one of the pairs of blocks, arms carried by the other bearing shaft to extend upwardly from the other pair of blocks, a cross shaft connecting said pairs of arms at their` A intersection, a body, an extension formed by against the underside of the said body, a pair of curved arms carried by said cross shaft and having connection with said body and cam-like means carried by one of the pairs of said arms to engage with the curved portions of the curved arms upon movement of the lower portions of said pairs of arms toward each other.

4. In a lowering and raising device the combination with a frame, of guides formed by the frame, screw rods journaled on the frame, and extending longitudinally in said guides, pairs of blocks mounted to slide in the guides and having threaded connection with said screw rods, pairs of arms, bearing shafts connecting the blocks and each pair with one of the pairs of arms connected with one of the bearing shafts and the other pair of arms with the other bearing shaft, a cross shaft connecting the pairs of arms at their intersection, a borly, a plate on the underside v of the body, an extension formed by extending one of the pairs of arms and a ,roller carried by the extension to bear against the with one of the pairs of arms connected with v one of the bearing shafts and the other pair of arms with the other bearing shaft, a cross shaft connecting the pairs of arms at their intersection, a body, a plate on the underside of the body, an extension formed by extend-` ing one of the pairs of arms, aroller carried by the extension to bear against the plate on the underside of the body, a pair of curved arms carried by said cross shaft and connecting with the underside of the body and olfset cam-like elements carried by one of the pairs of arms to engage with the curved portions of the pair of curved arms upon movement of said pairs of blocks in said guides.

6. In a lowering Yand raising device .the combination with a main frame and a vehicle body of an interposed toggle frame for the raising or lowering of the vehicle body, relative to the main frame, said toggle frame comprising pairs of arms movable toward or away from-each other with one pair of arms pivoted to a substantially medial portion of the other pair of'arms, and upwardly angularly extending extension formed by continning the other pair'of arms beyond the'pvotai connection of the first mentioned pair of arms therewith, the free end of said eXtensionfhzwe sliding Contact With the said Vehicle body, Supporting arms connected to the underside of the vehicle body rand pvoted at the pointsof'pivotzd connection of the irst.

mentioned pair of arms `with the substantiaiiy medial portion of the .second Vmen-I tioned pair of arms and extension hars ear- 10 red by the rst mentioned pair of arms to move .therewith and enga-ge the said Supporting arms to Support the latter.

ntestimony Whereoi:l We aflix our signatures. i

JGSEPH GASSER. ALFRED H. BARBER. 

